@-webkit-keyframes fadeIn {
 from { opacity: 0; }
 to { opacity: 1; }
}
 
@keyframes fadeIn {
 from { opacity: 0; }
 to { opacity: 1; }
}
 
.ocultar {
display:none;
 
}
.mostrar {
display:block;
-webkit-animation:fadeIn 1s;
 
}